19 In the patent practice for chemical inventions, the structural similarity of chemical compounds between the invention and the prior art is usually considered ___________ for the determination of non-obviousness? Choose one phrase that best completes the above sentence.
(A) equitable estoppel
(B) prima facie evidence
(C) an unexpected advantageous property
(D) hindsight evident

答案:登入後查看
統計: A(1), B(1), C(0), D(0), E(0) #1200180